Despite the consistent misinformation around it (very frequently flat out lies), Corporate Personhood does not mean that corporations are people. Corporate Personhood only acknowledges that corporations are groups of people, and that if it would be legal to gather a large group to do something, doing so under the auspices of a corporation is also legal. That is the precedent that Citizens United set - That it is as legal to make political contributions and endorsements as a corporation as you would as a rotary club. You can argue that the rotary club shouldn't be allowed to make contributions - And I would agree with you. I in fact, encourage it. People should not be able to hide their political contributions through entities like Trade Unions, which are actually the most pertinent part of that class.
